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CT Registry > Patient Care & Radiation Safety > Flashcards

Patient Care & Radiation Safety Flashcards

(69 cards)

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1
Q

Hematocrit (HCT)

A

35% - 50%

Males are generally higher

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2
Q

Hemoglobin (Hgb)

A

Males 14 - 17 g/dL

Females 12-15 g/dL

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3
Q

Platelets (Plt)

A

140,000 - 440,000 platelets per microliter

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4
Q

Prothrombin Time (PT)

A

12 - 15 sec

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5
Q

Partial Thromboplastin Time (PTT)

A

25 - 35 sec

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6
Q

International Normalized Ratio (INR)

A

0.8 - 1.2

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7
Q

Body Temperature

A
  1. 7 - 99.5 deg F

36. 5 - 37.5 deg C

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8
Q

Pulse

A

60 - 100 bpm

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9
Q

Blood Pressure

A

Systolic 100 - 120 mm Hg

Diastolic 60 - 80 mm Hg

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10
Q

Respirations

A

12 - 20 breaths/min

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11
Q

Pulse Oximetry

A

95% - 100%

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12
Q

P wave

A

Electrical activity through the atria (atrial systole)

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13
Q

QRS complex

A

Movement of electrical impulses through the ventricles (ventricular systole)

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14
Q

ST segment

A

When ventricle is contracting but no electricity is flowing through it

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15
Q

T wave

A

When the ventricles are resetting electrically and preparing for the next muscle contraction (complete diastole)

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16
Q

Blood Urea Nitrogen (BUN)

A

7 - 25 mg/dL

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17
Q

Creatinine

A

0.5 - 1.5 mg/dL

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18
Q

eGFR

A

90 - 120 mL/min

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19
Q

Radiation in Air - Exposure

A

C/kg or R

Ability of x-rays to ionize a volume of air

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20
Q

Radiation in Air - Air Kerma

A

mGy

Amount of radiation absorbed in a quantity of air

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21
Q

Absorbed Dose (D)

A

D = Joules/kilogram

Gy or mGy

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22
Q

Equivalent Dose (EqD)

A

EqD = D x Wr

Sv or mSv

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23
Q

Effective Dose (EfD)

A

EfD = D x Wr x Wt

Sv or mSv

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24
Q

CTDI

A

mGy

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25
DLP (Helical)
CTDI x scan length | mGy-cm
26
Patient appears drowsy but can be aroused
Lethargic
27
Patient is in a more depressed level of consciousness and may not easily be aroused from a state of confusion
Obtunded
28
State of near unresponsiveness (semicomatose)
Stupor
29
Patient is completely unresponsive to stimuli
Coma
30
Pulse rate for children
70 - 120 bpm
31
Preferred bpm for optimal heart imaging
65 bpm
32
Ataxia
Loss of muscle coordination
33
Respirations for children
20 - 30 breaths/min
34
Nasal cannula / Mask
1 - 5 LPM / +6 LPM
35
BUN / creatinine ratio
6:1 to 22:1
36
GFR
70 +- 14 mL/min/m2 for men | 60 +- 10 mL/min/m2 for women
37
Medical reconciliation
Process of reviewing patient's medical record at all points of care
38
Medication record should include:
Name, dosage, frequency, and route
39
Warfarin (Coumadin)
Anticoagulant
40
Metformin (Glucophage)
Should not take before and up to 2 days after exam
41
RCM through GI tract
30 - 90 min
42
Neutral contrast agent
Volumen
43
Serum iodine concentration
2 - 8 mg/mL
44
Filtration
6 - 9 mm aluminum (Al) or equivalent
45
Ability of the detector to capture transmitted x-ray quanta and produce the appropriate response
Inherent absorption efficiency
46
The spatial arrangement of detector elements, including the amount of interspace material required between adjacent elements
Geometric efficiency
47
Section of patient exposed to radiation
Dose profile
48
CTDIvol
CTDIw / pitch
49
MSAD (Axial)
T/I x CTDI
50
MSAD (Helical)
CTDI / pitch
51
DLP (Axial)
MSAD x slice width (cm) x number of slices in scan volume
52
Medication for sedation (anxiolytic)
Benzodiazepines - Midazolam - Diazepam - Lorazepam - Clonazepam Selective serotonine inhibitors - Paroxetine - Seratraline - Fluoxetine - Escitalopram
53
Medication for analgesia
- Fentanyl - Hydromorphone - Morphine
54
Ionic contrast media
- Iothalamate meglumine - Diatrizoate sodium - Metrizoate - Ioxaglate
55
Nonionic contrast media
- Iohexol - Iopamidol - Iopromide - Iodixanol - Ioversol
56
Overranging or z-axis overscanning
Applying radiation dose before and after the acquisition volume to ensure sufficient data collection for the interpolation algorithms of helical CT reconstruction
57
Mild reactions to contrast
- Mild urticaria (hives) - Mild cutaneous edema (swelling) - Nasal stuffiness/sneezing - Scratchy/itchy throat - Nausea/vomiting - Pronounced sensation of warmth and/or flushing - Sweats/chills - Anxiety - Altered taste - Mild hypertension - Transient vasovagal reaction
58
Moderate reactions to contrast
- Moderate to severe urticaria - Diffuse erythema - Facial edema - Tightening throat, hoarse voice - Wheezing - Moderate to severe nausea and vomiting - Vasovagal response requiring treatment - Tachycardia from hypotension - Chest pain
59
Severe reactions to contrast
- Facial, laryngeal, and/or PE - Anaphylactic shock - Severe erythema - Profound hypotension - Severe wheezing and/or bronchospasm - Cardiac arrhythmia - Seizure - Severe hypertension - Cardiopulmonary arrest - Death
60
Common delayed reactions to contrast
- Urticaria (hives) - Pruritus (itchiness) - Nausea/vomiting - Drowsiness - Headache - Fever/chills (Cutaneous reactions are most common and can occur within 3 hours to 7 days after contrast)
61
Risk factors for CIN
- Preexisting renal function and hydration level - Diabetes - Myeloma - Advanced age - Cardiovascular disease
62
Risk factors for adverse reaction to iodinated contrast
- Asthma - Environmental and/or food allergies - Renal disease - Multiple myeloma - Diabetes mellitus - Pheochromocytoma - Sickle cell disease - Hyperthyroidism - Significant cardiac disease - Anxiety
63
Contraindications to IV iodinated contrast
- Allergy to iodine - Prior severe allergic reaction to an iodinated contrast agent - Renal insufficiency/failure
64
Parenteral routes
- Intramuscular - Intravenous - Intradermal - Subcutaneous
65
Used for bradycardia during vagal reaction
Atropine
66
Bronchodilator
Epinephrine (Adrenalin)
67
Medicine for severe anaphylactoid reactions
Epinephrine and Diphenhydramine
68
INR is calculated to standardize:
PT
69
Inherent filtration of x-ray tube used in a CT system typically amounts to equivalent thickness of:
3 mm Al

CT Registry (4 decks)

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